Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Jul. 31, 2016	Jan. 31, 2016
Payables And Accruals [Abstract]
Accrued commissions	$ 1,908	$ 2,798
Accrued bonus	1,806	2,957
Deferred compensation associated with Zinc Ahead	2,504	1,120
Accrued other compensation and benefits	6,164	5,576
Total accrued compensation and benefits	12,382	12,451
Accrued fees payable to salesforce.com	4,339	4,222
Accrued third-party professional services subcontractors' fees	591	1,152
Sales taxes payable	928	1,597
Other accrued expenses	3,436	4,088
Total accrued expenses and other current liabilities	$ 9,294	$ 11,059